a scientific model is a model used to test theories. sometimes scientist use rats as a scientific model
<h2>Answer:</h2>
The great genetic and phenotypic diversity among humans is due to crossing over during meiosis in the human population.
<u>If crossing over does not happen in meiosis then, there will no genetic and phenotypic diversity in humans.
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In simple words, the faces and traits will reappear in generations.
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<span>The word Coryza comes from Greek word "kóruza" which means "</span>nasal mucus".
The infection of the upper respiratory tract by the virus will induce an inflammatory reaction that will lead to secretion of thin watery mucus. The patient will have a runny nose and/or nasal congestion with loss of ability to smell.
Cells with large numbers of mitochondria have a high energy demand
Watershed is the place where water of rain and snow get stored. The watershed contains surface water-and wetlands--and all the underlying ground water,lakes, streams, reservoirs. Lake is the major component of the watershed . The watershed can be used for various purpose like dams, hydrological modification etc.
